Safety-razor.



A. M. AUBERT.

SAFETY RAZOR.

APPLICATION FILED DEC. 30. 1915.

w M P ALBERT MAURICE AUBERT, OF BILLANCOUBT, FRANCE.

SAFETY-RAZOR.

Specification of Letters Patent.

Patented Mar. as, rare.

Application filed December 30, 1915. Serial No. 69,403.

To all whom it may concern:

Be it known that I, ALBERT MAURICE- 1 exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference markedthereon, which form a part of this specification. H

In all known safety razors the operations, fixing the blade to the comb or guard and removing it, are complicated;

This invention relates to a safety razor that is chiefly characterized by a new mode of securing the blade in position whereby the above operations are, so to speak, instantaneously efiected without any taking apart of the several members.

The invention also comprises a novel form of razor handle which permits of a practical and economical mode of securing the blade in position.

The invention is based on the fact that a chord of an arc of a circle is shorter than the arc itself. Consequently, if an opening be formed in a blade, one can, when the blade is fiat, pass through this opening a member or part of T form, that is to say a piece comprising a central part and side Wings constituting .a head, provided the width of this head does not exceed that of the opening, but if the blade be then bent so as to cause it to bear against-a curved surface, the ends of the opening approach the axis or each other and are no longer in registration with the ends of the head, as the latter have not altered their position. These ends can therefore serve to keep the blade against the curved surface of the sup: port. Consequently, by providing an opening in the blade of a razor and arranging in the handle a rod terminating in a headand capable of being shifted into the interior of the handle by any suitable means after the blade has been threaded on to it,

and caused to assume the curvat ure of the comb, it is possible to maintain the blade in place without recourse to any complithis principle.

cated attaching devices. Of course the curvature of the head should be the same as that of the comb and be made to contact with the blade throughout its expanse or only in certain parts. Preferably the blade is not curved in the direction it is customary to curve it, but rather in the direction at right angles to this, that is to say its cutting edges form curved lines. This arrangement, in fact, appears preferable; nevertheless, the mode of attachment referred to above can also be employed for a blade bent in the customary manner.

The invention is represented in the accompanying drawing, in which:-

Figure 1 is a detail figure, drawn to a large scale, showing the principle of attaching the vblade according to this invention. Fig. 2 is a vertical section of a razor, showing by way of example a mode of applying Fig. 3 is a cross section along the line A-B Fig. 2.

In thesefigures, 1 is the curved comb or support whose teeth are as indicated on the curved edges.

2 is the blade pierced with an elongated slot 3.

4 is a .tube forming part of the handle, and which tube can be soldered to the comb, though its fixing is not indispensable.

5 is a rod inclosed in the handle and movable longitudinally; it terminates in a head 6 with lateral parts 7. The body of the head 6 is adapted to take into an opening formed in the comb, while the lateral parts 7 are able to pass through the longer opening in the blade when in a flat state, as indicated in full lines in Fig. 1. This same figure shows, in dotted lines, that when the blade has been pressed against the curved comb the extremities of the slot project inside of the ends *of the lateral parts, 7 so that the blade is thus retained by them when these parts are raised by rod 5 in a. manner to keep the blade applied against the comb. On tube 4, shown in Figs. 1, 2 and 3, can be slid a tube 8 closed in at its upper end by a'stopper or cap 9 fixed to rod 5. A coil spring 10 is compressed between this cap and a thrust collar 11 sliding freely on rod 5 and supported on the end of rod 4. This spring tends to draw the rod 5 with its head 6, 7 inwardly and thereby retain the blade against thecurved comb. When it is desired to fix a blade on the razor the rod 4 is held between two fingers and with the first finger the stopper 9 is pressed in order to depress the head. This done, the blade is placed over the parts 7 and with the other hand is pushed up against the curved comb. The stopper 9 is then released whereupon the parts 7 abut against the blade'retaining it in place bearing on the comb. For greater security, it is preferable to maintain the relative positions of tubeslz and 8 otherwise than merely the action of spring 10. To this end a bayonet joint as indicated in the drawing may be adopted.- Tube 4- carries a stop pin 12 adapted to engage ina'groove or slot 13 formed in tube8. The slot 13 has both a horizontal and a vertical portion. By a small turning movement of one tube relatively to the other all longitudinal movement i prevented and the blade is retained against the comb. A reversal of the movements permits the blade to be removed.

The construction of the handle which has been described is of quite a practical character, but it may be modified in different ways without departing from the fundamental principle of the. invention, which consists in utilizing the curvature of the blade and an opening therein for fixing the blade in position.

Having thus described my invention and the best means I know of carrying the same into practical effect, I claim 1. Ina safety razor, a flexible removable blade having a slot,'a fixed support having a curved surface disposed next to the blade and an opening of less length than that of the blade slot, and a retaining member movable about an axis of the razor handle, said handle consisting of a body part, of

a size adapted to pass into the opening of the curved support and the slot of the blade,

and two. wings or lateral parts which give 7 the retaining piece a total width that is just able to pass, through the blade slot when the blade is in fiat condition but cannot do so when the blade is applied to the support and assumes the curvature thereof, the face of the said two wings in contact with the blade having a predetermined conformation for holding the blade against the support.

2. In a safety razor a flexible removable blade having a slot whose long sides, are formed as cutting edges, a fixed support having a curved surface disposed next to the blade and an opening of less length than that of the blade slot, and a retaining member movable about an axis of the razor handle, said handle consisting of, a body part of a size adapted to pass into the opening of the curved support and the slot of the blade, and two wings or lateral parts which give the retaining piece a total width that is just able to pass through the blade slot when the blade is in fiat condition but cannot do so when the blade is applied to the support and assumes the curvature there- -of, the face of the said two wings in contact with the blade having a predetermined conformation for holding the blade against the support, said support having comb-like teeth which are parallel to the cutting edges of blade slot.

3. In a safety razor, a flexible removable blade having a slot, a fixed support having a curved face disposed next to the blade and provided with comb-like teeth on its edges and an opening of less length than that of the blade slot, and a retaining member movable about an axis of the razor handle, said handle consisting of a body part, of a size adapted to pass into the opening of the curved support and the slot of the blade, and two wings or lateral parts which give the retaining piece a total width that is just able to-pass through the blade slot when the blade is'in fiat condition but cannot do so when the blade is applied to the support and assumes the curvature thereof, the face of the said two'wings in contact with the blade having a predetermined conformation'for holding the blade against the support, a tube connected with the support, a second tube capable of sliding and turning on the first said tube, a stopper at the free end of the second tube, a rod housed in said tubes and connected at one end to the said stopper and at the other end to the said retaining member and a spring tending to move the second tube and the stopper outwardly away from the first tube thereby causing the said wings to be retained against the blade.'

4. In a safety razor, a flexible removable blade having a slot, a fixed support having a curved face disposed next to the blade and provided with comb-like teeth on its edges and an opening of less length than that of the blade slot, and a retaining member movable about an axis of the razor handle,-said handle consisting of a body part, of a size adapted to pass into the opening of the curved support and the slot of the blade, and two wings or lateral parts which give the retaining piece a total width that is just able to pass through the blade slot when the blade is in flat condition but cannot do so when the blade is applied to the support and assumes the curvature thereof, the face of the said two wings in contact with the blade having a predetermined conformation for holding the blade tube, a rod housed in said tubes and connected at one end to the said stopper and as my invention; I have signed my name at the other end to the "Sfild reta ning memin presence of two subscribing Witnesses.

her and a spring tending to move the second tube and the stopper outwardly away from ALBERT MAURICE AUBERT' 5 the first tube thereby causing the said Wings Witnesses: v

to be retained against the blade. CHAS. P, PRESSLY,

In testimony that I claim the foregoing V EUGENE GUYARD. 

